<?php

if (!defined('BASEPATH'))
  exit('No direct script access allowed');
/**
 * CodeIgniter
 *
 * An open source application development framework for PHP 5.1.6 or newer
 *
 * @package		CodeIgniter
 * @copyright	Copyright (c) 2008 - 2011, EllisLab, Inc.
 * @license		http://codeigniter.com/user_guide/license.html
 * @author		EllisLab Dev Team
 * @link		http://codeigniter.com
 * @since		Version 2.1.2
 * @filesource
 */
// ------------------------------------------------------------------------

/**
 * PDO Result Class
 *
 * This class extends the parent result class: CI_DB_result
 *
 * @category	Database
 * @author		EllisLab Dev Team
 * @link		http://codeigniter.com/user_guide/database/
 */
class CI_DB_pdo_result extends CI_DB_result {

  public $num_rows;

  /**
   * Number of rows in the result set
   *
   * @return	int
   */
  public function num_rows() {
    if (is_int($this->num_rows)) {
      return $this->num_rows;
    } elseif (($this->num_rows = $this->result_id->rowCount()) > 0) {
      return $this->num_rows;
    }

    $this->num_rows = count($this->result_id->fetchAll());
    $this->result_id->execute();
    return $this->num_rows;
  }

  // --------------------------------------------------------------------

  /**
   * Number of fields in the result set
   *
   * @access	public
   * @return	integer
   */
  function num_fields() {
    return $this->result_id->columnCount();
  }

  // --------------------------------------------------------------------

  /**
   * Fetch Field Names
   *
   * Generates an array of column names
   *
   * @access	public
   * @return	array
   */
  function list_fields() {
    if ($this->db->db_debug) {
      return $this->db->display_error('db_unsuported_feature');
    }
    return FALSE;
  }

  // --------------------------------------------------------------------

  /**
   * Field data
   *
   * Generates an array of objects containing field meta-data
   *
   * @access	public
   * @return	array
   */
  function field_data() {
    $data = array();

    try {
      for ($i = 0; $i < $this->num_fields(); $i++) {
        $data[] = $this->result_id->getColumnMeta($i);
      }

      return $data;
    } catch (Exception $e) {
      if ($this->db->db_debug) {
        return $this->db->display_error('db_unsuported_feature');
      }
      return FALSE;
    }
  }

  // --------------------------------------------------------------------

  /**
   * Free the result
   *
   * @return	null
   */
  function free_result() {
    if (is_object($this->result_id)) {
      $this->result_id = FALSE;
    }
  }

  // --------------------------------------------------------------------

  /**
   * Data Seek
   *
   * Moves the internal pointer to the desired offset.  We call
   * this internally before fetching results to make sure the
   * result set starts at zero
   *
   * @access	private
   * @return	array
   */
  function _data_seek($n = 0) {
    return FALSE;
  }

  // --------------------------------------------------------------------

  /**
   * Result - associative array
   *
   * Returns the result set as an array
   *
   * @access	private
   * @return	array
   */
  function _fetch_assoc() {
    return $this->result_id->fetch(PDO::FETCH_ASSOC);
  }

  // --------------------------------------------------------------------

  /**
   * Result - object
   *
   * Returns the result set as an object
   *
   * @access	private
   * @return	object
   */
  function _fetch_object() {
    return $this->result_id->fetchObject();
  }

}

/* End of file pdo_result.php */
/* Location: ./system/database/drivers/pdo/pdo_result.php */